The crash occurred about 5:06 p.m. at the intersection of Purchase and Washington (Route 138) streets.
Two minivans — a Honda and a Toyota — collided head-on, causing extensive front-end damage to both vehicles. The collision sent one of the minivans into a guardrail.
"Easton Engine 12 was on-scene within five minutes and ascertained that multiple people were trapped inside two white minivans which had crashed head-on," the Easton Fire Department wrote in a statement.
Firefighters used the Jaws of Life hydraulic extrication tool to gain access to one of the minivans, which contained eight adults, all of whom were injured. Two adults in the second minivan were also injured, officials said.